In the rich text editor:
@Onyx-Vega
In a comment:
[Onyx-Vega](https://chowlings.com/user/Onyx-Vega)
For Names and Avatars:
In the rich text editor:
%Onyx-Vega
In a comment:
[![Onyx-Vega's Avatar](https://chowlings.com/images/avatars/842.png?v=1644063333)](https://chowlings.com/user/Onyx-Vega) [Onyx-Vega](https://chowlings.com/user/Onyx-Vega)